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the hash before signing. That way we can then support RSA signatures with any hash supported by OpenSSL, not only MD5 and SHA1. It was also required a new method on DigestEngine to obtain the NID (numeric ID) of the algorithm, to be used on the OpenSSL RSA_sign call.
101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
//
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// DigestEngine.h
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//
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// $Id: //poco/1.4/Crypto/include/Poco/Crypto/DigestEngine.h#1 $
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//
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// Library: Crypto
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// Package: Digest
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// Module: DigestEngine
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//
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// Definition of the DigestEngine class.
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//
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// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Crypto_DigestEngine_INCLUDED
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#define Crypto_DigestEngine_INCLUDED
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#include "Poco/Crypto/Crypto.h"
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#include "Poco/DigestEngine.h"
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#include <openssl/evp.h>
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namespace Poco {
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namespace Crypto {
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class Crypto_API DigestEngine: public Poco::DigestEngine
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/// This class implements a Poco::DigestEngine for all
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/// digest algorithms supported by OpenSSL.
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{
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public:
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DigestEngine(const std::string& name);
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/// Creates a DigestEngine using the digest with the given name
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/// (e.g., "MD5", "SHA1", "SHA256", "SHA512", etc.).
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/// See the OpenSSL documentation for a list of supported digest algorithms.
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///
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/// Throws a Poco::NotFoundException if no algorithm with the given name exists.
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~DigestEngine();
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/// Destroys the DigestEngine.
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const std::string& algorithm() const;
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/// Returns the name of the digest algorithm.
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int nid() const;
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/// Returns the NID (OpenSSL object identifier) of the digest algorithm.
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// DigestEngine
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std::size_t digestLength() const;
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void reset();
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const Poco::DigestEngine::Digest& digest();
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protected:
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void updateImpl(const void* data, std::size_t length);
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private:
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std::string _name;
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EVP_MD_CTX* _ctx;
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Poco::DigestEngine::Digest _digest;
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};
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//
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// inlines
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//
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inline const std::string& DigestEngine::algorithm() const
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{
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return _name;
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}
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} } // namespace Poco::Crypto
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#endif // Crypto_DigestEngine_INCLUDED
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